HP Pro 7740

[LMBL]

The printer keeps jamming and will not print even after I clear the paper out.

[VikramTheGreat]

Hi @LMBL,

Welcome to the HP Support Community.
 

Thank you for posting your query. I will be glad to help you.

Thank you for reaching out regarding your HP OfficeJet Pro 7740 Wide Format All-in-One Printer. If the printer is continuing to report paper jams even after clearing all visible paper, follow the steps below to resolve this issue:

Step 1: Power Reset the Printer

1. With the printer powered on, unplug it from the wall and from the rear.
2. Wait 60 seconds.
3. Plug it directly into a wall outlet (not a surge protector).
4. Turn the printer back on.

This resets the sensor systems and may clear a false jam.

Step 2: Check All Paper Path Areas

Remove all paper trays and open all access doors — even if no paper is visible:

1. Input tray – make sure paper isn’t misaligned or bent.
2. Output tray – gently lift and inspect underneath.
3. Duplexer/rear access door:
   • Remove it and check for paper scraps or curled edges.
4. Inside the ink carriage area:
   • Open the ink access door.
   • Wait for the carriage to move aside.
   • Check the entire paper path.
   • Use a flashlight to look inside both the left and right sides.
5. Wide-format tray (Tray 2) – if using 11x17" or similar, check for curled corners or overload.

Even small scraps of paper or debris can trigger the jam sensor.

Step 3: Clean the Paper Feed Rollers

Dusty or worn rollers can cause jams.

1. Power off and unplug the printer.
2. Dampen a lint-free cloth with distilled water.
3. Open the rear access and carefully clean the rollers inside.
4. Let dry completely (5–10 minutes) before turning the printer back on.

I hope this helps.

Take care and have a good day.

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VikramTheGreat

HP Support